589 and 592 amino acid, 62 kDa ; comprises a N-term ser, tyr, gln, gly -rich region, followed by a an RNA binding domain and a Cys2/Cys2 finger motif, and repeats in C-term

Expression

wide; in the fetus and in the adult

Localisation

nuclear

Function

single strand DNA/RNA binding protein; part of theTFIID and RNA polymerase II complex of proteins which assemble on the promoter to form a pre-initiation complex (PIC); TFIID is composed of a TATA-box-binding protein (TBP) and a number of TBP-associated factors (TAFIIS); contribute to the activation of transcription